Kanai Y, Wada O, Manabe S
Department of Hygiene and Preventive Medicine, Faculty of Medicine, University of Tokyo, Japan.
Carcinogenesis. 1990 Jun;11(6):1001-3. doi: 10.1093/carcin/11.6.1001.
Carcinogenic glutamic acid pyrolysis products were measured in condensate of cigarette mainstream smoke by HPLC. These carcinogens were found to be present in all brands of filter-tipped cigarette analyzed. The mean levels of 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole and 2-aminodipyridol[1,2-a:3',2'-d]imidazole in the cigarette mainstream smoke were 0.66 and 0.63 ng/cig respectively.